Shaking and dumping grate



June 26, 19.23. 1,466,242

. J. E. HANCOCK sHAKNG AND fDUMPING GRATE Filed Sept. 23. 1922 2 Sheets-Shee'll 2 @wwe/11m JQJJQ l?, Hancock.

7 www Patented .lune 26, 1923.

UNITED STATES PATENT OFFICE.`

JESSE E. HANCOCK, OF DUPONT, GEORGIA, ASSIGNOR OF FIVE PER CENT TO F. B.

v 'BULLARD, OF DUPONT, GEORGIA.

sHAKING AND DUMPING GRATE.

Application rfiled. September 23, 1922. Serial No. z590,088.

To all 'whom t may concern.'

Be it known that I, JnssnE. HANCOCK, a citizen of the United States, residing at Dupont, in the county of Clinch and State of Georgia, have invented certain new and useful Improvements -in Shak-ing and Dumping Grates, of which the following is a specification.

This invention relates to grates and has special reference toa dumping and shaking grate.

In many cases, especially in commercial adaptations such as for locomotive boilers and boilers in power ,and steam plants, it is necessary at times to quickly dump the fire. For instance, in' locomotive practice it sometimes happens that walter in the boiler becomes low and the injector fails to operate. Under suchconditions there is great danger of burning the crown sheet of the fire boX and it is advisable under lsuch conditions to quickly dump the fire. Also in some steam plants at the end of operations it is .found advisable to dumpthe iire.

One important object of the invention is to improve the general construction of dumping grates `so that the lire may be dumped without any loss of time and thereby accidents may be prevented. i

In other instances, it is desirable, esv pecially in cleaning a fire, to be able to dump a portion of the fire without puttingout the remainder.

A second important objectof the inveni tion is to provide an improved dumping grate wherein construction is such that one half of the lire or ashes above the grate may be dumped while the remaining part of the fire is kept on its half of the grate.

4Practice has also shown that the great length necessary in the grate bars under modern locomotives and like places, these bars being unsupported -in the middle tends to rapid deterioration and burning out under` conditions of use.

A third important object of the invention is to provide an improved form of grate wherein short grate barsinay be -used and wherein the center of the fire will be strongly supported by permanent frame beams, so thatsagging of this part of the grate will'be obviated.

A fourth important object of the invention is to provide an improved; form of dumping grate wherein different parts of the grate may be independently dumped and wherein each part will consist of a plurality of sections which may be inde-` pendently shaken.

IV ith the above and other objects in view `as willA be hereinafter apparent, the invention consists in general of certain novel details of construction and combinations of parts hereinafter fully described, illustrated rin the accompanying drawings and specifi- Figure 2 is a section on the `line 2--2 of Figure l.

\ Figure 3 is a section on the line 3.-3 of Figure l.

Figure 4 is a section on'the line 4 4 of Figure l. f

Figure 5 is a plan view of the working .endh'of the grate showing the ioor.

Figure 6 is a detail perspective showing' the end of one of the shaking rods.

Figure 7 is a detail view showing one of the bearings for the rock shafts used herewith in dumping the grate portions.

In the present embodiment of the invention it has not been deemed necessary to show anything but the' partsof the grate itself, the same being applicable td anyA type of' boiler. This grate consists of a main frame l0 having a longitudinally eX- tending brace bar ll which connects the two ends of the-main frame at their center point, and a transversely extending brace bar l2. Bv this means the longitudinal bar divides the grate into right and left hand halves while the transverse bar divides the grate into a pair of sections in each half. It is obvious ythat there may be as many 1 of these sections as desirable, it being merely necessary to putinadditional bracey bars.` ,Beneath the grate there are provided, cenl trally of each half, longitudinally alined ,bearing boxes 13 in each set `of which therer is supported a rock shaft 14 which is square between the bearings. On these. rock shafts 111 are supported grate bar supporting frames 15 `wherein are rockingly mounted the grate bars 16. Each of these grate bars 16 has a downwardly extending nger 17 v and the fingers of each section are pivotally connected to a link 18 so that forward Varm 2O to which is pivotally connected a link 21, the other end of the link being connected to the lower end of an operating lever 22 which projects upwardly through a suitable slot 23 in the floor, hinged dogs 24: being positioned adjacent these slots so that they can be thrown down and lock. the operating levers in place. By means of these two operating levers either side-may be rocked at will so that in case it is desired to clean one side of the fire the live coal may be raked from that side onto the other side and the ashes and cinders dumpedfrom the side to be cleaned. The fire may be then spread into the other side and similarly treated. Thus, without dumping the entire fire all ofthe ashes and cinders on either side may be gotten rid of. Also in an emergency both sides may be dumped at once thus getting rid of the entire fire. It will .be noted that in the rock arms and operating levers just mentioned, as well as those to bementioned hereinafter, the ends are mounted shaker levers 27 to the lower ends of which the remaining ends of the links 25 are connected. It will be observed that these shaker levers have certain offset portions to enable them to move around the boiler legs. Also it will be observed that the links 25 are pivotally mounted in the shaker levers and the pivot mount sufficiently yloose to permit free movement of these levers. In order to stop t'oo great movement of the auxiliary or grate bar frames 15 there is provided on the main frame 10 certain stops 30. From the foregoing it will be seen that either half of the grate may be dumped at will or any section shaken independently of the remaining section.4

There has thus been provided a simple and efficient device of the kind described and for the purpose specified.

It is obvious that minor changes may be made in the form and construction of the inventiony without departing from the Inaterial spirit thereof. It is not, therefore, desired to confine the invention l`to the exact form herein shown and described, but it is desired to include all such as properly come wti'hin the scope claimed.

Having thus described the invention what is claimed as new, is

1. In a vgrate of the class described, a main frame, va brace beam extending longitudinally of the main frame at its center and dividing the main frame into halves, other brace beams extending transversely of the main frame and dividing the respective halves into a plurality of sections, a rock shaft extending longitudinally of the main frame beneath each half and journalled to the main frame, grate bar supporting frames fitting in said sections of the main frame 'and each xedly mounted on a respective rock-shaft, grate bars rockingly supported in the bar supporting frames, rock arms iixed on the respective rock shafts and constituting operating levers whereby to oscillate the rock shafts and tilt the bar supporting frames, means adjacent the main frame in alinement with the longitudinal brace beam to operate said rock arms, and independent means separate from the rock shaft oscillating mechanism and located adjacent the endsof the respective halves and centrally disposed with relation to said respective halves for rocking the bars of the respective sections.

2. In a grate of the class described, `a main frame, a brace beam extending longitudinally of the main frame at its center and dividing the main frame into halves,

the main frame andl dividing the respective halves into a plurality of sections, a rock shaft extending longitudinally of the main frame beneath each half and journalled to 'other brace means extending transversely ofv the vmain frame, grate vbar supporting frames fitting in said sections of the main frame and each fixedly mounted on a respective rock shaft, grate bars rockingly supported in the bar supporting frames, rock arms fixed on the respective rock shafts and constituting operating levers whereby to oscillate the rock shafts and tilt the bar supporting' frames, a" pair of operating levers located in alinement with the front end of theJ brace beam and pivoted intermediate their ends, links each connecting one of the operating levers to a respective rock arm, and means separate from the mechanism for oscillating the rock shaft to rock the grate bars of the sections independently. f y j 3. In agrate of the class described, a main frame, a brace beam extending longitudinally of the main frame at its center and dividing the main frame into halves,l other brace beams extending transversely of the main frame 'and dividing therespective halves into a plurality' of sections, a rock shaft extending longitudinally of izo the main frame beneath each' half andjour-I nalled to the main frame, grate Vbar supporting frames tting in said sections ot the main frame and each fiXedly mounted on a respective rock shaft, grate bars roekngly supported in the bark supporting frames, rock arms fixed on the respective rock shafts and constituting operating levers whereby to oscillate the rock shafts and tilt the bar supporting frames, a pair of operating levers located in alinement with the front end of the brace beam and pivoted intermediate their ends,` links each connectingl one of theoperating levers to ay respective rock arm, means separate from the mechanism for oscillating the rock shaft to rock the grate bars of the sections inde`- pendently comprising a shaker lever for each grate section located at the -front of and v substantially in central alinement with the respective grate section, arms projecting downwardly from the respective grate bars, bars each pivotally connected to all of the arms of a respective section, and links each rotatably journalled at one end in the lower end of a respective shaker lever and pivotally connected at the other end to one of the last mentioned bars, said journal connections being suiiiciently free to permit shaking movement of the shaking levers.

In testimony whereof I ,aiix my signature. 

